Shower shelf



FIG. 1 is a front elevational view of a shower shelf showing my newdesign, the broken-line depiction of the ceiling portion being forillustrative purposes only and forming no part of the claimed design;

FIG. 2 is a left side elevational view thereof, the right side being amirror image of that shown;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a top, front and right side perspective view thereof.

The chain and hook elements are omitted from FIGS. 3-6 for clarity ofillustration.

The ornamental design for a shower shelf, as shown and described.